Hostname: page-component-848d4c4894-m9kch Total loading time: 0 Render date: 2024-05-01T03:15:53.214Z Has data issue: false hasContentIssue false
  • English
  • Français

The Oviposition and Duration of Life of a small Strain of the Rice Weevil, Calandra oryzae (L.), in Sierra Leone

Published online by Cambridge University Press:  10 July 2009

P. F. Prevett
P. F. Prevett
Affiliation:
Pest Infestation Laboratory, Slough.
Get access Rights & Permissions [Opens in a new window]

Extract

A study has been made of the rate of oviposition, on parboiled milled rice, of the small strain of the rice weevil, Calandra oryzae (L.), under normal laboratory conditions of temperature and relative humidity (means 27°C., 80% R.H.) in Sierra Leone, and of the utilisation of grains for oviposition.

On the average, a female laid 68 eggs in all, over an oviposition period of 71 days, the peak of egg-laying being reached during the third week. Only 13 per cent, of grains were utilised. Differences between the results obtained and those recorded by previous workers are discussed.

The mean length of life of male and female weevils was found to be 113 and 97 days, respectively.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 50 , Issue 4 , January 1960 , pp. 697 - 702
Copyright
Copyright © Cambridge University Press 1960

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Birch, L. C. (1945 a). A contribution to the ecology of Calandra oryzae L. and Rhizopertha dominica F. (Coleoptera) in stored wheat.—Trans, roy. Soc. S. Aust. 69 pp. 140–149.Google Scholar
Birch, L. C. (1945 b). The influence of temperature, humidity and density on the oviposition of the small strain of Calandra oryzae L. and Rhizopertha dominica Fab. (Coleoptera).—Aust. J. exp. Biol. med. Sci. 23 pp. 197–203.CrossRefGoogle ScholarPubMed
Dendy, A. & Elkington, H. D. (1920). Report on the vitality and rate of multiplication of certain grain insects under various conditions of temperature and moisture.—Rep. Grain Pests Comm. roy. Soc. no. 7, 52 pp.Google Scholar
Howe, R. W. (1952). The biology of the rice weevil, Calandra oryzae (L.).— Ann. appl. Biol. 39 pp. 168–180.Google Scholar
Nakayama, S. (1941). On the number of eggs laid by Calandra oryzae L. at constant temperature. [In Japanese.]—Rep. Ass. Adv. Sci. Japan 16 pp. 117–119. (Rev. appl. Ent. (A) 30 p. 8.)Google Scholar
Prevett, P. F. (in press). An investigation into storage problems of rice in Sierra Leone.—Colon. Res. Study. London, Colon. Off., H.M.S.O.Google Scholar
Richards, O. W. (1944). The two strains of the rice weevil, Calandra oryzae (L.) (Coleopt., Curculionidae).—Trans. R. ent. Soc. Lond. 94 pp. 187–200.CrossRefGoogle Scholar
Richards, O. W. (1947). Observations on grain-weevils, Calandra (Col., Curculionidae). I. General biology and oviposition.—Proc. zool. Soc. 117 pp. 1–43.Google Scholar
Sandner, H. (1959). Studies on the ecology and behaviour of the grain weevil (Calandra granaria L.) and the rice weevil (Sitophilus oryzae L.): vertical distribution and food relations.—Proc. XVth int. Congr. Zool. 1958 pp. 761–762.Google Scholar
Segrove, F. (1951). Oviposition behaviour in the two strains of the rice weevil, Calandra oryzae Linn. (Coleopt., Curculionidae).—J. exp. Biol. 28 pp 281–297.Google Scholar
Treiman, F. S. (1937). On the morphology and biology of Calandra oryzae L. [In Ukrainian with English & Russian summaries.]—Trav. Inst. Zool. Biol. Acad. Sci. Ukr. 14 pp. 259–277.Google Scholar